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01 june 2026, 11:27 мск

The solar activity surge at the end of May is over

The Sun on June 1, 2026
The Sun on June 1, 2026

Apparently, the increased activity in the second half of May has completely died down. During this time, at least four high-level X-ray flares occurred on the far side of the Sun. The Earth-facing side remained quiet all these days, and if it weren't for the Solar Orbiter spacecraft on the far side of the Sun and the coronagraphs showing giant plasma clouds erupting from the Sun's edge, we probably wouldn't even know the star was losing its equilibrium.

The Sun is currently relatively quiet. Yesterday, on Sunday, weak geomagnetic disturbances were observed—a small plasma ejection, which had departed on May 27, reached Earth (you can see its movement in this video). This is the last event worth noting for now. Otherwise, everything is quiet. Weak disturbances are predicted for Wednesday, June 3, next week. Their source—a small coronal hole forming a right triangle (you can even test the Pythagorean theorem)—is visible in incoming images at the very center of the disk. It's hard to call the Sun completely quiet. This is primarily due to the high background radiation on the flare graph, which stubbornly remains at level "C," indicating that some hidden activity heating the corona continues. However, there are no signs of major flares.

In short, we're currently experiencing a moderately quiet start to summer, and we'll see what happens in three months at the end of August.

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Laboratory of Solar Astronomy,SRI RAS

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